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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 | 1x 1x 1x 1x 1x | import { BufferReader, BufferWriter } from '@node-dlc/bufio';
import { ChannelId } from '@node-dlc/common';
import { MessageType } from '../MessageType';
import { IWireMessage } from './IWireMessage';
/**
* The `funding_signed` message is sent by the channel acceptor after
* they have recieved a `funding_created` message from the initiator.
* This message includes the signature for the initiator's first
* commitment transaction. After the initiator receives this message
* the channel can be broadcast to the Bitcoin network as both
* participants can spend the outputs of the funding transaction. This
* message also is the first instance of the `channel_id` and both sides
* can transition from using the `temporary_channel_id` to the actual
* `channel_id`.
*/
export class FundingSignedMessage implements IWireMessage {
public static type: MessageType = MessageType.FundingSigned;
/**
* Deserializes the funding_signed message
* @param buf
* @returns
*/
public static deserialize(buf: Buffer): FundingSignedMessage {
const instance = new FundingSignedMessage();
const reader = new BufferReader(buf);
reader.readUInt16BE(); // read type
instance.channelId = new ChannelId(reader.readBytes(32));
instance.signature = reader.readBytes(64);
return instance;
}
/**
* The type for message. funding_signed = 35
*/
public readonly type: MessageType = FundingSignedMessage.type;
/**
* ChannelId generated from the funding transactions outpoint.
*/
public channelId: ChannelId;
/**
* Signature for the counterpary's first commitment transaction.
* This signature allows the counterparty to spend the commitment
* using their own signature. The signature must be 64-bytes
* representing the 32-byte (r,s) values for an ECDSA signature.
*/
public signature: Buffer;
/**
* Serializes the message into a Buffer
*/
public serialize(): Buffer {
const writer = new BufferWriter();
writer.writeUInt16BE(this.type);
writer.writeBytes(this.channelId.toBuffer());
writer.writeBytes(this.signature);
return writer.toBuffer();
}
}
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